3x^2-18+39=0

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Solution for 3x^2-18+39=0 equation:


Simplifying
3x2 + -18 + 39 = 0

Reorder the terms:
-18 + 39 + 3x2 = 0

Combine like terms: -18 + 39 = 21
21 + 3x2 = 0

Solving
21 + 3x2 = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-21' to each side of the equation.
21 + -21 + 3x2 = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 3x2 = 0 + -21
3x2 = 0 + -21

Combine like terms: 0 + -21 = -21
3x2 = -21

Divide each side by '3'.
x2 = -7

Simplifying
x2 = -7

Reorder the terms:
7 + x2 = -7 + 7

Combine like terms: -7 + 7 = 0
7 + x2 = 0

The solution to this equation could not be determined.

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